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nonmetallic mineral resources of China
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nonmetallic mineral resources of China
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理学
中国非金属矿产资源
释
nonmetallic mineral resources of China
中国非金属矿产资源
在中国境内,除金属矿石和矿物燃料以外,具有经济价值的任何种类的岩石、矿物或矿物集合体。
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